Home / 129,630.59-178,891.79-75,195.36

Finding the Fourth Proportional to 129,630.59, 178,891.79 and 75,195.36

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Solution

The fourth proportional to 129,630.59, 178,891.79 and 75,195.36 is: 103,770.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,630.59 : 178,891.79 = 75,195.36 : x
  2. Step 2: Convert to fraction form
    129,630.59/178,891.79 = 75,195.36/x
  3. Step 3: Cross multiply
    129,630.59x = 178,891.79 × 75,195.36
  4. Step 4: Simplify right side
    129,630.59x = 13,451,832,738.08
  5. Step 5: Solve for x
    x = 13,451,832,738.08/129,630.59
  6. Step 6: Final answer
    x = 103,770.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.